Simplify expression construction for tests.

src/ngraph/ops/add.hpp

@@ -28,4 +28,10 @@ namespace ngraph
             virtual std::string description() const override { return "Add"; }
         };
     }
+
+    inline std::shared_ptr<ngraph::Node> operator+(const std::shared_ptr<ngraph::Node> arg0,
+                                                   const std::shared_ptr<ngraph::Node> arg1)
+    {
+        return std::make_shared<ngraph::op::Add>(arg0, arg1);
+    }
 }

src/ngraph/ops/multiply.hpp

@@ -29,4 +29,10 @@ namespace ngraph
             virtual std::string description() const override { return "Multiply"; }
         };
     }
+
+    inline std::shared_ptr<ngraph::Node> operator*(const std::shared_ptr<ngraph::Node> arg0,
+                                                   const std::shared_ptr<ngraph::Node> arg1)
+    {
+        return std::make_shared<ngraph::op::Multiply>(arg0, arg1);
+    }
 }

test/execute.cpp

@@ -25,11 +25,10 @@ TEST(execute, test_abc)
     auto A     = make_shared<op::Parameter>(element::Float32::element_type(), shape);
     auto B     = make_shared<op::Parameter>(element::Float32::element_type(), shape);
     auto C     = make_shared<op::Parameter>(element::Float32::element_type(), shape);
-    auto f     = make_shared<Function>(make_shared<op::Multiply>(make_shared<op::Add>(A, B), C),
-                                   op::Parameters{A, B, C});
+    auto f     = make_shared<Function>((A + B) * C, op::Parameters{A, B, C});
 
     auto external = make_shared<ngraph::runtime::eigen::ExternalFunction>(f);
-    auto cf = external->make_call_frame();
+    auto cf       = external->make_call_frame();
 
     // Create some tensors for input/output
     auto a      = make_shared<runtime::eigen::PrimaryTensorView<element::Float32>>(shape);